Background
He was the son of John Louis, Count of Nassau-Ottweiler and Countess Palatine Dorothea Catherine of Birkenfeld-Bischweiler.
He was the son of John Louis, Count of Nassau-Ottweiler and Countess Palatine Dorothea Catherine of Birkenfeld-Bischweiler.
He was count of Nassau-Ottweiler from 1680 until his death. From 1721, he was also Count of Nassau-Idstein. From 1723 also Count of Nassau-Saarbrücken.
Frederick Louis married on 28 July 1680 with Christiane (1659-1695), the daughter of Frederick of Ahlefeldt and Margaret Dorothea of Rantzau.
They had eight daughters:
Dorothea Frederica (born: 1681)
Charlotte Mary (born: 1684)
Christiane Charlotte (born: 1685)
Louise (born: 1686)
Sophia Amalia (born: 1688)
Maria (born: 1690)
Dorothea (born: 1692)
Eleanor (born: 1693)
After Christiane"s death, Frederick Louis married on 27 September 1697 Countess Louise Sophie of Hanau-Lichtenberg (11 April 1662 in Bischofsheim am Hohen Steg – 9 April 1751 in Ottweiler), the daughter of Johann Reinhard II of Hanau-Lichtenberg and Countess Palatine Anna Magdalena of Birkenfeld-Bischweiler. This marriage remained childless.